Space for mounting low cost TO-92 temperature sensor like National LM19. 8 pin Female Pin header (Tulip type) with GND, +5V, B0, B1, B2, B3, C3 and C4 signals. Wires can easily be plugged into it to access the signals. 4 pin Female Pin header (Tulip type) with GND, A0, A1 and A3 signals. Wires can easily be plugged into it to access the signals. These PIC ports also usually have Analog input capability on most PIC CPUs.